 /*******************************************************************************
  * Copyright (c) 2000, 2003 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.dialogs;

 import org.eclipse.jface.viewers.ITableLabelProvider;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.swt.widgets.*;

 /**
  * A concrete viewer based on a SWT <code>Table</code> control. The viewer supports indentation
  * of the table elements.
  * <p>
  * Label providers for this viewer must implement <code>IIndentedTableLabelProvider</code>
  * in order to get indentation.</p>
  */
 public class IndentedTableViewer extends TableViewer {
     /**
      * Extends <code>ITableLabelProvider</code> with the methods
      * to provide the indentation.
      *
      * @see TableViewer
      */
     public interface IIndentedTableLabelProvider extends ITableLabelProvider {
         /**
          * Returns the indent level for the element. This number will be used
          * as the parameter to the <code>TableItem.setImageIndent(int)<code> method.
          *
          * @param element the object representing the entire row, or
          * <code>null</code> indicating that no input object is set
          * in the viewer
          */
         public int getIndent(Object element);
     }
     public IndentedTableViewer(Composite parent) {
         super(parent);
     }
     public IndentedTableViewer(Composite parent, int style) {
         super(parent, style);
     }
     public IndentedTableViewer(Table table) {
         super(table);
     }
     public void doUpdateItem(Widget widget, Object element, boolean fullMap) {
         if (widget instanceof TableItem) {
             TableItem item = (TableItem) widget;
             if (getLabelProvider() instanceof IIndentedTableLabelProvider) {
                 IIndentedTableLabelProvider provider = (IIndentedTableLabelProvider)getLabelProvider();
                 item.setImageIndent(provider.getIndent(element));
             }
         }
         super.doUpdateItem(widget, element, fullMap);
     }
 }

